It turns the user invisible, makes them super fast, and forces them into third person for 3 seconds, but during this time they cannot attack. This can be used to get past difficult obstacles or as an escape method.
Developer information[edit | edit source]
Through m_flMaxspeed, the player's speed is increased to 520 Hammer units per second (the maximum speed on ground). The player is also given condition 66 (TFCond_StealthedUserBuffFade). The player is blocked from attacking using the netprops m_flNextPrimaryAttack and m_flNextSecondaryAttack and by blocking the IN_ATTACK button. Both are used because the former strangely allows using the Sapper, and the latter is dependent on a player's ping.